freshly painted interior metal door paint peeled off

dreamstwogo

I have a new white metal door, painted by the builder (I assume) on the inside. I wanted to go over with a darker gray color. I bought Olympic paint with primer in it at lowes. It is a semi-gloss. I went over the door with a sanding block to rough up the paint already on. I then put on 3 coats, waiting about 24 hours between coats. All I can say is that the paint never seemed to adhere properly. it felt rubbery, and when I was finally done I geve another 48 hours before taking off tape. While taking off the tape, it pulled at the paint, and all of the paint came off in sheets. It took off the white paint that was on the door as well. Now I have a metal door with nothing on it. Any ideas as to where I went wrong?

ARC Painting

This is simply an adhesion problem. Latex paint doesn't stick to metal very well, you need to prime with an approriate primer first. The paint-primer-in-one is not really adequate for any but the least demanding purposes. It sounds like the builder did not prime either, since the original paint came off too. latex paint sticks to latex paint better than metal, hence why it all came off together.

So you want to prime the door before painting, using a high quality adhesion primer, rated for metal. Then you can use the same paint you have, which should do fine as a finish coat.

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dreamstwogo

Thanks for your quick response! I am heading out to get the adhesion primer right now

Gymschu

This happens a lot with doors made of galvanized metal. If it's galvanized you will need a special primer.

jsheridan

I think he ran out to buy before he read your post.

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jsheridan

ARC, the problem is with the builder, not OP. Paint peels down to the layer where the issue occurs, which is that of not priming originally. OP was applying over paint, he didn't need a primer.

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dreamstwogo

I am still in process of getting every speck of paint off the metal door... both my coats of paint and the builders. I am going to start the whole thing from scratch. So therefore I haven't used the primer yet, and before I do, are you saying there is more than one type of metal primer? One specifically for galvanized metal doors? I think mine is just a general apply to "metal surfaces" primer.

PaliBob

I'm a tyro when it comes to painting, but I would not use it unless your can says for galvanized metal

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jsheridan

We don't know for sure that it's galvanized. Besides, what steel doors would come unprimed anyway? I doubt it's bare, raw steel.

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poppameth

The problem with builders is that they see a pre-primed door and paint right over it. You have to CLEAN it first. Latex will stick just fine to a factory primed door it you just take time to clean the oils and dirt off of it. As for galvanized metal, any acrylic primer should do fine on it. Stay away from Oil. Galvanized and oil don't like each other. Chances are it isn't galvanized anyway.

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sdsester

I've never trusted factory primed anything. The primer is just sprayed on at the very thinnest rate possible. I should think a high bond primer/underlay would work fine for this although I suppose something with a rust inhibitor on a raw steel door might be a good idea. I too doubt the door is galvanized.

pkrapp74

Poppameth is correct about the factory primer. Usually a thorough wipedown is all you need.

All steel doors manufactured in the last 10 years are galvanized. The better quality doors are hot-dipped.

sdsester

Did not know this. Thanks.

bbo

I also would not wait to take off the tape. the longer you leave tape on, the better it adheres to the surface it is on.

And I'd use painters tape ... made to go on and come off much more easily.

ric knows paint

see next post...(sigh)